Home / 1,581.79-2,184.80-1,185.22

Finding the Fourth Proportional to 1,581.79, 2,184.80 and 1,185.22

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Solution

The fourth proportional to 1,581.79, 2,184.80 and 1,185.22 is: 1,637.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.79 : 2,184.80 = 1,185.22 : x
  2. Step 2: Convert to fraction form
    1,581.79/2,184.80 = 1,185.22/x
  3. Step 3: Cross multiply
    1,581.79x = 2,184.80 × 1,185.22
  4. Step 4: Simplify right side
    1,581.79x = 2,589,480.67
  5. Step 5: Solve for x
    x = 2,589,480.67/1,581.79
  6. Step 6: Final answer
    x = 1,637.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.